Simulation of vertical dynamic vehicle–track interaction – Comparison of two- and three-dimensional models
Paper in proceedings, 2020

By using an extended state-space vector approach, the vertical dynamic vehicle–track interaction between a railway vehicle and a slab track is simulated in the time domain. Both two- and three-dimensional track and vehicle models are considered. In the two-dimensional track model, the rail, panel and roadbed are modelled using Rayleigh‒Timoshenko beam elements. In the three-dimensional track model, the rails are modelled using Rayleigh–Timoshenko beam elements, whereas the panel and roadbed are modelled by 3D brick elements. Based on Python scripts, the parameterised three-dimensional track model is developed in Abaqus, from which the system matrices are exported to Matlab where the dynamic analysis is performed. In the presented numerical examples, similarities and differences between the two models are discussed, and it is highlighted in what scenarios the different models are feasible to employ.

slab track

vehicle–track coupled dynamics

ballastless track

dynamic vehicle–track interaction

simulation

Author

Emil Aggestam

Chalmers, Mechanics and Maritime Sciences, Dynamics

Jens Nielsen

Chalmers, Mechanics and Maritime Sciences, Dynamics

Niklas Sved

SWECO

Proceedings of the 26th Symposium of the International Association for Vehicle System Dynamics (IAVSD 2019)

26th Symposium of the International Association for Vehicle System Dynamics (IAVSD 2019)
Gothenburg, Sweden,

Subject Categories

Mechanical Engineering

Areas of Advance

Transport

DOI

10.1007/978-3-030-38077-9_49

More information

Latest update

4/21/2020